}} The soundtrack album and background score of this film were composed by
Anirudh Ravichander. The album consists of five songs with
Madhan Karky and
Vivek penning one song, and the rest of the songs were penned by
Viveka. The album was released by
Sony Music India. The first single track "Karuthavanlaam Galeejaam" sung by Anirudh and written by Viveka was released on 28 August 2017, which picturises the life of the slum people, and also notes, that the lyrics intent to celebrate the working class and their contribution towards the development of the city. The song is filmed, in a huge set erected at
Prasad Labs,
Chennai for a slum like concept. The second single was released on 2 November 2017. The combined single track "Iraiva + Uyire" sung by Anirudh and
Jonita Gandhi consists of two songs "Iraiva" and "Uyire" which deals about love and life respectively. The song genres in these two of these, were alternatively different. While "Iraiva" is a solo number which consists of a slow melody with rock beats in between, "Uyire" is a slow enhancing duet, with beats involved in it.
Sivakarthikeyan and
Nayanthara went to
Georgia in September 2016, to shoot this duet in the picturesque locations of the country. The tracklist was released on 2 December 2017, through the official
Twitter account of the production house. The audio launch event for the film was held on 3 December 2017 at
ITC Grand Chola Hotel in
Chennai where Sivakarthikeyan,
Mohan Raja and Anirudh Ravichander along with other cast and crew, were present at the venue, while Nayanthara and
Fahadh Faasil did not attend the audio launch. The event was streamed live on
Facebook,
YouTube and
Twitter. The songs were released simultaneously in other digital streaming platforms. Later, the audio launch was telecasted on
Star Vijay on 10 December 2017. The album received positive reviews from critics. Behindwoods rated the album 3 out of 5 stars, with a quote "Variety is the name of the game, and Anirudh is one of its best players!" Hindustan Times gave positive reviews stating "Anirudh Ravichander delivers a box full of surprises". Studioflicks rated 3.5 out of 5 and gave a verdict "Sivakarthikeyan-Anirudh duo strikes gold again" stating that "Velaikkaran strikes spectacularly with three instant hits that includes Idhayane, Karuthavanlaam Galeejaam, and Iraiva. The other tracks sounding like signature songs will definitely gain its impact with the visuals." == Release ==